Public engineering firm directory

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120 Degreez

Los Angeles, CA

Redefining Technical Excellence

Website1 officeUpdated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: Electrical EngineeringService: Plumbing EngineeringIndustry: CommercialIndustry: HospitalityType: MEP+7 more

154 Tech LLC

Santa Barbara, CA

Advanced systems engineering, geospatial intelligence, and end-to-end program lifecycle support

WebsitePhone1 office2 credentialsUpdated Jun 2026

Service detail: Technical Program Management

Service: Technical Program ManagementService: End-to-End Program ManagementService: Risk ManagementIndustry: DefenseIndustry: FederalType: Defense Engineering+28 more

18 Grados Corp

San Juan, PR

18 Grados Design is a multidisciplinary design-build architecture and engineering practice based in Puerto Rico, specializing in contemporary design and comprehensive project development. Founded in 2013, the practice delivers a diverse range of services encompassing architecture, civil and structural engineering, permitting, and construction management. It supports projects across multiple sectors, ranging from custom single-family residences to complex retail expansions and mixed-use developments. By integrating design and construction under a single collaborative framework, 18 Grados Design streamlines the execution of both small-scale renovations and large-scale commercial developments.

Website1 office6 projects3 leadersFounded 2013Updated Jun 2026

Project: Mirador

Service: ArchitectureService: DesignService: Conceptual DesignIndustry: ResidentialIndustry: CommercialType: Architecture & Engineering+23 more

1836 Engineering LLC

Fort Worth, TX

Founded in Texas, by Texans.

WebsitePhone2 offices13 projects1 leaders2 credentialsUpdated Jun 2026

Project: Terminal Development Program - San Antonio Airport

Service: Construction Engineering & InspectionService: Contract AdministrationService: Construction ManagementIndustry: Highways & RoadsIndustry: BridgesType: Civil Engineering+30 more

186 Engineering, LLC

Atlanta, GA

Electrical Forensic Engineering, Infrared Inspections, and Design

WebsitePhone1 office5 projects1 leaders5 credentialsUpdated Jun 2026

Project: Washington Harbour Flood Electrical Damage Assessment

Service: Electrical Forensic EngineeringService: Investigation Of Electrical SystemsService: ComponentsIndustry: CommercialIndustry: IndustrialType: Electrical Engineering+28 more

1CSDesign

San Diego, CA

Engineering Confidence From the Ground Up

WebsitePhone1 office1 leadersUpdated Jun 2026

Service detail: Structural Design

Service: Structural DesignService: Residential and Commercial Building DesignService: Structural Material EngineeringIndustry: ResidentialIndustry: CommercialType: Structural Engineering+13 more

1st Self Consulting, LLC

Loves Park, IL

Sustainable Transportation Engineering Planning & Design

WebsitePhone1 office1 projects1 leadersSize Estimate: 1-10 employeesUpdated Jun 2026

Project: USAID Emergency and Resilience Food Security Infrastructure Review

Service: Civil Engineering ConsultingService: Providing Professional Civil Engineering AdvisoryService: Consulting ServicesIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+25 more

2 Bravo Group LLC

We make sure buildings work

Website6 projectsUpdated Jun 2026

Project: VA Medical Center - New Construction Commissioning

Service: Building CommissioningService: Design and submittal reviewService: Functional performance testingIndustry: FederalIndustry: DefenseType: MEP+18 more

20/10 Engineering Group, LLC

Sustainable Designs | Better Engineering Vision

Website9 projectsUpdated Jun 2026

Project: Trinity International University - New Waybright Student Center

Service: Mechanical, Electrical, and Plumbing EngineeringService: HVAC and Climate Control SystemsService: Plumbing and Process Piping DesignIndustry: EducationIndustry: HealthcareType: MEP+26 more

29E6, LLC

Beaufort, SC

Collaborative structural engineering for architects and contractors.

WebsitePhone1 office2 projectsFounded 2017Size Estimate: 1-9 employeesUpdated Jun 2026

Project: Hilton Head Island Recreation Center Enhancement & Expansion

Service: Commercial EngineeringService: Residential Structural EngineeringService: Industrial New ConstructionIndustry: CommercialIndustry: ResidentialType: Structural Engineering+9 more

2IM Group, LLC

Chicago, IL

2IM Group, LLC is a Chicago-based civil, environmental, and transportation engineering practice. Now part of MacKay, it continues to deliver technical solutions across highways, roads, streets, aviation, rail, transit, utilities, and stormwater management systems while offering expanded resources and broader geographic reach.

WebsitePhone1 office5 projects8 leadersFounded 2005Updated Jun 2026

Project: O'Hare Terminal 3, Concourse L Expansion

Service: Highways, Roads, and StreetsService: Roadway geometryService: Drainage systemsIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+29 more

2LMN, Inc.

Lancaster, OH

Your Trusted Engineering Partner

WebsitePhone4 offices10 leaders4 credentialsFounded 1979Updated Jun 2026

Service detail: Land Development

Service: Land DevelopmentService: Site Drainage and Grading PlansService: Stormwater Pollution Prevention PlansIndustry: InfrastructureIndustry: GovernmentType: Civil Engineering+48 more

2M Associates, LLC

Dallas, TX

Best Engineering Solutions to Build Your Dreams

WebsitePhone1 office5 projects2 credentialsFounded 2009Updated Jun 2026

Project: DFW Airport Southwest End Around Taxiway - Drainage Design

Service: Water and Wastewater DesignService: Hydrologic/hydraulic AnalysisService: ModelingIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+57 more

3 Phase Associates LLC

Chattanooga, TN

Electrical Engineering and Consulting Services

Website1 office2 credentialsFounded 2016Size Estimate: 10-49 employeesUpdated Jun 2026

Service detail: Electrical Engineering

Service: Electrical EngineeringService: Power System CalculationsService: Arc Flash AnalysisIndustry: UtilitiesIndustry: Power Transmission & DistributionType: Electrical Engineering+31 more

3 Rocks Engineering & Surveying

Cañon City, CO

Colorado Civil, Structural, & Land Surveying Experts

WebsitePhone3 offices9 projects2 leadersSize Estimate: 11-50 employeesUpdated Jun 2026

Project: Love's Travel Stop & RV Park Designs

Service: Civil EngineeringService: Residential and Commercial Site DevelopmentService: Oil and Gas Civil SupportIndustry: CommercialIndustry: ResidentialType: Civil Engineering+28 more

3-Tier Alaska

Fairbanks, AK

Civil & Environmental Engineering, Surveying

WebsitePhone3 officesUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Septic System Design and TestingService: Road Design and InspectionIndustry: ResidentialIndustry: CommercialType: Civil Engineering+19 more

303rd Engineering Group, LLC

St. Louis, MO

Successful Partnerships, Successful Projects

WebsitePhone1 office5 projects1 leaders1 credentialsFounded 2005

Project: Airmen's Dormitories, Scott Air Force Base

Service: Electrical EngineeringService: Fire Alarm SystemsService: Energy ConservationIndustry: GovernmentIndustry: FederalType: MEP+18 more

316 Product Development, LLC

Passionate and Creative

Website6 projects6 leadersSize Estimate: 1-9 employeesUpdated Jun 2026

Project: Vacuum Assisted Breast Biopsy Device

Service: Mechanical EngineeringService: Advanced Computer Aided Design (CAD)Service: Finite Element Analysis (FEA) and SimulationIndustry: Medical DevicesIndustry: Consumer ProductsType: Mechanical Engineering+34 more

333 Engineering Services PLLC

Porter, TX

333 Engineering Services PLLC provides specialized consulting mechanical engineering services to clients primarily in the Houston, Texas region. It delivers finite element analysis and structural assessment solutions to support complex industrial and manufacturing design requirements.

Website1 office1 leaders2 credentialsUpdated Jun 2026

Service detail: Mechanical Engineering Consulting

Service: Mechanical Engineering ConsultingService: Finite Element AnalysisService: Analysis Program SetupIndustry: ManufacturingIndustry: IndustrialType: Mechanical Engineering+2 more

360 Energy Group

Chicago, IL

Your Energy Use Simplified

WebsitePhone1 office3 projectsUpdated Jun 2026

Project: Schaumburg Park District Energy Efficiency Study

Service: Program Design and ImplementationService: Public Sector ProgramsService: Geothermal Heat Pump DeploymentIndustry: GovernmentIndustry: UtilitiesType: Power & Utility Engineering+19 more

360 Engineering Group

Tulsa, OK

360 Engineering Group is a structural engineering firm with offices in Tulsa and Oklahoma City, Oklahoma, Manhattan, Kansas, and Dallas, Texas, holding professional engineer licenses in 49 states and Washington D.C. Its licensed engineers deliver structural design and analysis, BIM coordination, structural evaluation and rehabilitation, shop drawing preparation, peer reviews, and expert witness services for a broad range of building types and market sectors.

WebsitePhone4 offices4 projects6 leadersUpdated Jun 2026

Project: Block 34

Service: Structural Design and AnalysisService: Building Information ModelingService: Structural Evaluation and RehabilitationIndustry: CommercialIndustry: RetailType: Structural Engineering+15 more

360 Engineering P.C.

Civil, Structural, and Construction Engineering Services

Website1 leadersFounded 2020Size Estimate: 1-9 employeesUpdated Jun 2026

Service detail: Structural Engineering

Service: Structural EngineeringService: Structural Evaluations of Existing BuildingsService: Structural Rehabilitation and Alteration DesignIndustry: CommercialIndustry: ResidentialType: Civil Engineering+23 more

360 Engineering, Inc.

Golden, CO

Engineering & Consulting for the Built Environment

WebsitePhone1 office12 projects6 leaders17 credentialsFounded 2003

Project: DEN B-East & C-East Concourse Expansions

Service: Mechanical & Plumbing EngineeringService: HVAC DesignService: Plumbing EngineeringIndustry: EducationIndustry: GovernmentType: Mechanical Engineering+15 more

360 Professional Land Surveyors, PLLC

Mineral Wells, WV

360 Professional Land Surveyors, PLLC is a licensed land surveying firm based in Mineral Wells, West Virginia, serving Wood County and surrounding WV counties including Jackson, Mason, Ritchie, Wirt, Pleasants, and others. A high percentage of its business comes from repeat customers and referrals.

Website1 officeUpdated Jun 2026

Service detail: Property / Boundary Surveying

Service: Property / Boundary SurveyingService: ALTA SurveyService: Elevation CertificationIndustry: Land DevelopmentIndustry: ResidentialType: Land Surveying+8 more